| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
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| 10/02/2001 | US6298466 Method and system for synthesizing operational amplifiers for amplifying systems with minimal total harmonic distortion |
| 10/02/2001 | US6298226 Receiver for RF signals |
| 10/02/2001 | US6298097 Amplifier with wideband digital predistortion |
| 10/02/2001 | US6298096 Method and apparatus for determination of predistortion parameters for a quadrature modulator |
| 10/02/2001 | US6297708 Temperature compensated high performance oscillator |
| 10/02/2001 | US6297697 Methods and apparatus for noise shaping a mixed signal power output |
| 10/02/2001 | US6297694 High frequency power amplifier |
| 10/02/2001 | US6297693 Techniques for synchronizing a self oscillating variable frequency modulator to an external clock |
| 10/02/2001 | US6297692 Pulse modulation power amplifier with enhanced cascade control method |
| 10/02/2001 | US6297688 Current generating circuit |
| 09/30/2001 | CA2342279A1 Ultra-linear laser drive circuit |
| 09/27/2001 | WO2001024467A3 Method for adjusting a phase angle of a phase modifier of a transmitting device |
| 09/27/2001 | US20010024141 Semiconductor power amplifier and multistage monolithic integrated circuit |
| 09/27/2001 | DE10012863A1 Regulation circuit for physical parameter - has linearisation block inserted in feedback path between non-linear regulation path and regulator providing setting value for latter |
| 09/27/2001 | DE10011127A1 Electronic interface network coupling actuator and/or sensor to energy and data transmission system has data separation provided by choke coil with parallel voltage follower |
| 09/26/2001 | EP1137170A2 High frequency circuit |
| 09/26/2001 | EP1137169A2 Unidirectionality in electronic circuits through feedback |
| 09/26/2001 | EP0683939B1 Radio transceiver comprising an arrangement for compensating for a dc component |
| 09/25/2001 | US6295442 Amplitude modulation to phase modulation cancellation method in an RF amplifier |
| 09/25/2001 | US6294959 Circuit that operates in a manner substantially complementary to an amplifying device included therein and apparatus incorporating same |
| 09/25/2001 | US6294958 Apparatus and method for a class AB output stage having a stable quiescent current and improved cross over behavior |
| 09/25/2001 | US6294956 System and method for producing amplified signal(s) or version(s) thereof |
| 09/25/2001 | US6294955 Apparatus and method for use in disconnecting and/or replacing one of a plurality of power amplifiers in a transmitter while the transmitter is operating |
| 09/25/2001 | US6294954 Adaptive dead time control for switching circuits |
| 09/25/2001 | US6294941 Semiconductor integrated circuit including voltage follower circuit |
| 09/20/2001 | WO2001069879A1 Digital i/q modulator having a predistorsion |
| 09/20/2001 | WO2001069778A2 Method for determining the parameters of an n-gate |
| 09/20/2001 | US20010022534 Power amplifier |
| 09/20/2001 | US20010022532 Phase and amplitude detector and method of determining errors |
| 09/20/2001 | DE10022853A1 Parameter determining method for high frequency power amplifier involves plotting amplitudes of series of modulated signals, and obtaining time breaks through cross correlation of signals |
| 09/20/2001 | DE10012538C1 Digital I/Q modulator with pre-distortion, e.g. for broadcast radio transmitter, forms I and Q pre-distortion components from difference between I and Q signals and additional pre-distortion values |
| 09/20/2001 | DE10010457A1 Integrierter Speicher mit Speicherzellen mit magnetoresistivem Speichereffekt Integrated memory having memory cells with a magnetoresistive memory effect |
| 09/19/2001 | EP1134891A1 Circuit arrangement for working point adjustment of a high frequency transistor and amplifier circuit |
| 09/19/2001 | EP1134890A1 Fet gate biasing control device for power amplifier |
| 09/19/2001 | EP1134869A2 Circuit arrangement for regulating non-linear control loops |
| 09/19/2001 | EP1133824A1 Circuit system for regulating the operating point of a power amplifier |
| 09/19/2001 | EP0759228B1 Continuous time programmable analog block architecture |
| 09/19/2001 | CN1314025A Methods for adjusting audio signals responsive to changes ina power supply level and related communications devices |
| 09/18/2001 | US6292677 Power delivery system and method of controlling the power delivery system for use in a radio frequency system |
| 09/18/2001 | US6292060 Technique to generate negative conductance in CMOS tuned cascode RF amplifiers |
| 09/18/2001 | US6292057 Output stage of an operational amplifier and method having a latchup-free sourcing current booster for driving low impedance loads |
| 09/18/2001 | US6292055 Electronic apparatus comprising a power amplifier |
| 09/18/2001 | US6292054 System and method for producing an amplified signal |
| 09/18/2001 | US6292032 High impedance circuit |
| 09/18/2001 | US6292031 Level shift circuit with common mode level control |
| 09/18/2001 | CA2099260C A tri-state switching amplifier |
| 09/18/2001 | CA2021622C Predistortion equalizer with resistive combiners and dividers |
| 09/13/2001 | WO2001067598A1 Method and apparatus for improving the efficiency of power amplifiers, operating under a large peak-to-average ratio |
| 09/13/2001 | WO2001067594A1 Circuit arrangement for adjusting the operating point of a high-frequency transistor and an amplifier circuit |
| 09/13/2001 | WO2001067593A2 Improved method and apparatus for improving the efficiency of power amplifiers, operating under a large peak-to-average ratio |
| 09/13/2001 | WO2000070746A8 Power modulation systems and methods that separately amplify low and high frequency portions of an amplitude waveform |
| 09/13/2001 | WO2000008773A3 Radio devices including power amplifier control circuits with hardware lockouts |
| 09/13/2001 | US20010020872 High frequency power amplifier, and communication apparatus |
| 09/13/2001 | US20010020871 Low noise amplifier |
| 09/13/2001 | US20010020870 Amplifier output stage |
| 09/13/2001 | US20010020868 Linear power amplifying apparatus |
| 09/13/2001 | EP1145447A3 Radio devices including power amplifier control circuits with hardware lockouts |
| 09/13/2001 | CA2402468A1 Improved method and apparatus for improving the efficiency of power amplifiers, operating under a large peak-to-average ratio |
| 09/12/2001 | EP1132917A2 Integrated memory with memory cells having a magneto-resistive memory effect |
| 09/12/2001 | EP1131929A1 Method and apparatus for the determination of the predistortion parameters in a quadrature modulator, by measuring the output power |
| 09/12/2001 | EP1131885A1 Circuit and method for linearizing amplitude modulation in a power amplifier |
| 09/12/2001 | EP1131884A1 An amplifier |
| 09/12/2001 | EP1131883A1 Rf power amplifier linearization using parallel rf power amplifiers having intermod-complementing predistortion paths |
| 09/12/2001 | CN1312564A Integrated storage with storage unit with magnetic resistance storage effect |
| 09/11/2001 | US6288814 In-line predistorter for linearization of electronic and optical signals |
| 09/11/2001 | US6288613 Bias circuits for depletion mode field effect transistors |
| 09/11/2001 | US6288610 Method and apparatus for correcting signals, apparatus for compensating for distortion, apparatus for preparing distortion compensating data, and transmitter |
| 09/11/2001 | US6288608 Radio frequency power amplifier for a battery powered handset unit of a wireless communications system |
| 09/11/2001 | US6288606 Linear power amplifier arrangement and method for its operation |
| 09/11/2001 | US6288596 Gate biasing arrangement to temperature compensate a quiescent current of a power transistor |
| 09/11/2001 | US6286996 Method and arrangement for measuring temperature of a semiconductor component in an inactive state |
| 09/07/2001 | WO2001065722A2 Method and transmission circuit for producing a transmission signal |
| 09/07/2001 | WO2001065706A2 Device for linearising a high-frequency amplifier |
| 09/07/2001 | WO2001065698A1 Dc offset correction adaptable to multiple requirements |
| 09/07/2001 | WO2001065685A1 Method and transmitting circuit for generating a transmission signal |
| 09/07/2001 | WO2001065684A1 Method and transmission circuit for producing a transmission signal |
| 09/07/2001 | WO2001065683A1 Method and transmission circuit for generating a transmission signal |
| 09/07/2001 | WO2001065682A2 Method and transmission circuit for producing a transmission signal |
| 09/07/2001 | WO2000069065A3 Amplifier with wideband digital predistortion |
| 09/06/2001 | US20010019290 Stability and enhanced gain of amplifiers using inductive coupling |
| 09/06/2001 | US20010019289 Traveling wave power combiner and radio base station |
| 09/06/2001 | US20010019287 Active bias circuit having wilson and widlar configurations |
| 09/06/2001 | US20010019261 Bandgap voltage reference source |
| 09/06/2001 | DE10054971A1 Pufferschaltung und Halteschaltung Buffer circuit and hold circuit |
| 09/05/2001 | EP1130769A2 Feed-forward compensation scheme for feedback circuits |
| 09/05/2001 | EP1129556A1 Method and apparatus for reducing distortion of digital data |
| 09/05/2001 | CN1311918A Method of attenuating zero crossing distortion and noise in a amplifier, amplifier and uses of the method and amplifier |
| 09/04/2001 | US6285412 Adaptive pre-equalization apparatus for correcting linear distortion of a non-ideal data transmission system |
| 09/04/2001 | US6285259 System and method for converting from single-ended to differential signals |
| 09/04/2001 | US6285257 Feedback type variable gain amplifier |
| 09/04/2001 | US6285255 Adaptive compensation for carrier signal phase distortion |
| 09/04/2001 | US6285253 Systems, methods, and circuits for reducing HUM modulation in amplifiers |
| 09/04/2001 | US6285252 Apparatus and method for broadband feedforward predistortion |
| 09/04/2001 | US6285251 Amplification systems and methods using fixed and modulated power supply voltages and buck-boost control |
| 09/04/2001 | US6285245 Constant voltage generating circuit |
| 09/04/2001 | US6285239 Feed-forward biasing for RF amplifiers |
| 09/04/2001 | US6285232 Driver circuit and output stabilizing method therefor |
| 09/04/2001 | CA2251504C Feedforward amplifier with improved characteristics without using pilot signal |
| 09/04/2001 | CA2248337C Offset correction circuit and dc amplification circuit |
| 08/30/2001 | WO2001063795A1 Envelope - tracking amplifier having improved gain, terminal device for mobile communication using the same, and method for improving gain relating thereto |